Which knot is used to join two ropes of equal diameter?

• A. Bowline
• B. Square knot
• C. Clove hitch
• D. Figure eight knot

Answer: (B)

Joining two ropes of equal diameter is best accomplished with a square knot, also known as the reef knot. It’s formed by two simple overhand knots tied in opposite directions, so the ends sit neatly and the join lies flat. This symmetry and flat profile let two equal-thickness lines pull evenly without binding, and it’s relatively easy to untie after loading is removed. Keep in mind it’s not ideal for joining ropes of different diameters or for heavy, dynamic loads—in those cases a sheet bend is more reliable. The other knots serve different tasks: the bowline creates a fixed loop at the end, the clove hitch binds around an object, and the figure eight knots act as a stopper or form a loop, not a reliable join for equal-diameter lines.